AU2005225565A1 - Two-component adhesion promoter composition and use of packaging comprising two compartments - Google Patents

Abstract

Two components coupling composition (I), for surface pretreatment, comprises component (C1) (at least a hydrolyzable coupling substance A comprising organosilicon compound, organotitanium compound and/or organozirconium compounds) and component (C2) (at least a compound B that reacts/catalysts condensation of (A)), where C1 and (C2) are present in unopened condition in two chambers, separated from each other by a partition. Independent claims are also included for: (i) use of a packaging comprising two chambers for storing the two components (C1 and C2) and a partition for separating the two components from each other; (ii) packing comprising the packaging and (I); and (iii) a method for applying (I) for surface pretreatment comprising applying pressure on the partition by applying pressure (which breaks the partition), contacting the two components through an opening (optionally by removing a cover) and applying (I) on the substrate surface.

Description

DECLARATION I, Roland Dux, of Sika Technology AG, Toffenwies 16, P.O. Box, CH - 8048 Zurich do solemnly and sincerely declare: 1. That I am well acquainted with both the English and German languages, and 2. That the attached document is a true and correct translation of the specification accompanying the application for patent made in International Application No. PCT/EP2005/051355 filed on March 23, 2005. AND I make this declaration conscientiously believing the statement contained herein to be true in every particular. SIG NED this ............. ... ..... ......... day of .... .. .... . ........... (Signature) O 2005/093002 PCT/EP2005/051355 5 TWO-COMPONENT ADHESION PROMOTER COMPOSITION AND USE OF PACKAGING COMPRISING TWO COMPARTMENTS 10 Technical Field The invention pertains to the field of two-component adhesion promoter compositions for surface pretreatment. 15 The invention likewise pertains to the use of a pack having two compartments. Prior Art 20 Adhesion promoter substances have been used for a long time for improving adhesion, particularly that of adhesives and sealants. In particular, silane compounds and titanate compounds have long been known as adhesion 25 promoter substances of this kind. It has emerged that specifically, depending on material and nature of the surfaces and on the adhesive or sealant used, it is necessary to select very specific adhesion promoter substances or mixtures thereof. These adhesion promoter 30 compositions are used as primers or adhesion activators for the pretreatment of surfaces on which adhesion bonding, or sealing, is to take place. First, in the prior art, adhesion promoter substances of this kind are dissolved in an inert, volatile solvent, and as a 35 result are storable for prolonged periods in the absence of moisture. When this adhesion promoter composition is applied to a surface, the volatile solvent evaporates, and the atmospheric moisture D 2005/093002 PCT/EP2005/051355 2/43 hydrolyzes the adhesion promoter substances and causes them to undergo condensation with one another and also, where appropriate, with polar groups on the surface. This reaction, however, requires a certain time until 5 the adhesion is developed. When these adhesion promoter substances come into contact with water, they undergo hydrolysis and condensation to form oligomers and/or polymers. When 10 such oligomers, and particularly such polymers, are applied, however, the adhesion promoter effect is very frequently markedly poorer or is lost entirely. It has emerged that the development of adhesion is often inadequate if a very quick-crosslinking adhesive, in 15 particular a very quick polyurethane adhesive, is applied to the adhesion promoter composition. Because the prevailing trend in the market is away from volatile solvents - often also referred to as VOC 20 (Volatile Organic Compounds), ways have been sought to produce aqueous adhesion promoter compositions. Aqueous silane primers of this kind are described for example in EP 0 577 014 B1 and EP 0 985 718 A2. US 6,511,752 describes an aqueous primer based on a silane/titanate 25 mixture. Common to all of these known aqueous silane compositions is the fact that their preparation requires a very costly and inconvenient production process with a very large number of added substances. In order to ensure a somewhat acceptable storage 30 stability, these processes are limited, moreover, to specific silanes or titanates. The shelf life of the commercially available aqueous pretreatment products is very limited and is typically less than 6 months. 35 There are a variety of packaging designs, particularly in the food sector and in the pharmaceutical industry, which feature two chambers separate from one another.

) 2005/093002 PCT/EP2005/051355 3/43 FR 2 616 322, for example, describes a device having two compartments for the sterile dissolution of reactive components. 5 Description of the Invention It is an object of the present invention, therefore, to provide an adhesion promoter composition which is stable on storage for a very long time, is easy to 10 produce, and can be applied easily and reliably to a surface, along with an associated pack. Surprisingly it has now emerged that this object can be achieved by a two-component adhesion promoter 15 composition for surface pretreatment, as claimed in claim 1. The core of the invention is that at least one hydrolyzable adhesion promoter substance and one 20 compound which reacts with the adhesion promoter substance or which triggers or catalyzes condensation of the adhesion promoter substance are stored in compartments which are separated from one another by a dividing wall. 25 Surprisingly it has emerged that the results achievable with a freshly produced adhesion promoter solution are significantly better than with a composition of the same kind produced a long time beforehand. 30 Also found has been the use of a pack, as claimed in claim 18, and also a package, as claimed in claim 26. A pack of this kind is very easy for the user to use 35 and, as and when required, a freshly produced composition can be applied and hence profit obtained from the advantages. The pack is suitable in principle ) 2005/093002 PCT/EP2005/051355 4/43 for all adhesion promoter substances which are stable in the absence of moisture, as a result of which it is possible to employ a significantly broader range of possible adhesion promoter substances, since the 5 optimum adhesion promoter substance or composition can be used without having to take account of the storage stability of the mixed composition. Brief Description of the Drawings 10 Exemplary embodiments of the invention are elucidated in more detail below, with reference to the drawings. Within the various figures, elements that are alike have been given the same reference symbols. The 15 direction of forces is indicated by arrows. Fig. 1 shows a cross section through an embodiment P1 having a rupturable dividing wall, 20 Fig. 2 shows a cross section through an embodiment P2 having a bursting aid, in particular a cutting means, Fig. 3 shows a cross section through an embodiment 25 P3 having a seal, Fig. 4 shows a cross section through an embodiment P4 having an extractable dividing wall, 30 Figs. 5-9 show a cross section through preferred embodiments of P1 Fig. 10 shows a cross section through preferred embodiments of P2 35 Fig. 11 shows a cross section through preferred embodiments of P4 D 2005/093002 PCT/EP2005/051355 5/43 Only those elements critical to the direct understanding of the invention have been shown. Motions and pressures have been indicated by arrows. 5 Ways of Implementing the Invention The present invention relates to a two-component adhesion promoter composition for surface pretreatment 10 that comprises two components, the first component, K1, comprising at least one hydrolyzable adhesion promoter substance A which is selected from the group comprising organosilicon compounds, organotitanium compounds, organozirconium compounds, and mixtures thereof. 15 Additionally the second component, K2, comprises at least one compound B which reacts with the adhesion promoter substance A or triggers or catalyzes condensation of the adhesion promoter substance A. In the unopened state, the first and the second components 20 are present in two compartments separated from one another by at least one dividing wall. The invention further provides for the use of a pack which has two compartments separated from one another 25 by at least one dividing wall for the storage of two components K1, K2, as are described in detail in the two-component adhesion promoter composition in this document. 30 The invention further provides a package which is composed of a pack having two compartments separated from one another by at least one dividing wall and also of the two-component adhesion promoter composition of the invention. 35 The first component, K1, comprises or consists of at least one hydrolyzable adhesion promoter substance A.

D 2005/093002 PCT/EP2005/051355 6/43 The at least one hydrolyzable adhesion promoter substance A can be an organosilicon compound. Suitability is possessed in principle by all those 5 organosilicon compounds known to the skilled worker that are used as adhesion promoters. Preferably this organosilicon compound carries at least one, in particular at least two, alkoxy group or groups which is or are attached via an oxygen-silicon bond directly 10 to a silicon atom. Additionally the organosilicon compound carries at least one substituent which is attached via a silicon-carbon bond to the silicon atom and which optionally has a functional group which is selected from the group comprising oxirane, hydroxyl, 15 (meth)acryloyloxy, amino, mercapto, and vinyl group. In particular the hydrolyzable adhesion promoter substance A is a compound of the formula (I) 3 Ia I X-R-Si-(OR2 )3 20 The substituent R1 in this formula is a linear or branched, optionally cyclic, alkylene group having 1 to 20 C atoms, with or without aromatic components, and optionally with one or more heteroatoms, especially nitrogen atoms. 25 The substituent R 2 is an alkyl group having 1 to 5 C atoms, especially methyl or ethyl. Furthermore, the substituent R 3 is an alkyl group 30 having 1 to 8 C atoms, especially methyl, and the substituent X is an H or a functional group which is selected from the group comprising oxirane, OH, (meth)acryloyloxy, amine, SH, and vinyl.

) 2005/093002 PCT/EP2005/051355 7/43 Finally, a is one of the values 0, 1 or 2. Preferably a = 0. Preferred substituent R1 is methylene, propylene, 5 methylpropylene, butylene or dimethylbutylene group. Preferably R1 is a propylene group. Suitable organosilicon compounds are readily available commercially and with particular preference are 10 selected from the group comprising methyltri acetoxysilane, ethyltriacetoxysilane, 3-meth acryloyloxypropyltrialkoxysilanes, 3-aminopropyltri alkoxysilanes, bis[3-(trialkoxysilyl)propyl]amines, tris[3-(trialkoxysilyl)propyl]amines, 3-aminopropyl 15 trialkoxysilanes, N-(2-aminoethyl)-3-aminopropyl trialkoxysilanes, N-(2-aminoethyl)-N-(2-aminoethyl)-3 aminopropyltrialkoxysilanes, 3-glycidyloxypropyltri alkoxysilanes, 3-mercaptopropyltrialkoxysilanes, vinyl trialkoxysilanes, methyltrialkoxysilanes, octyltri 20 alkoxysilanes, dodecyltrialkoxysilanes, and hexadecyl trialkoxysilanes, particular suitability being possessed by the methoxysilanes and ethoxysilanes of the abovementioned compounds. 25 The at least one hydrolyzable adhesion promoter substance A can also be an organotitanium compound. Suitability is possessed in principle by all those organotitanium compounds known to the skilled worker that are used as adhesion promoters. 30 Particular suitability is possessed by organotitanium compound which carries at least one functional group which is selected from the group comprising alkoxy group, sulfonate group, phosphates, carboxylate group, 35 and acetylacetonate, or carries mixtures thereof, and which is attached via an oxygen-titanium bond directly to a titanium atom.

D 2005/093002 PCT/EP2005/051355 8/43 Alkoxy groups which have proven particularly suitable are, in particular, isopropoxy substituents and so called neoalkoxy substituents, particularly those of 5 the following formula 0 0 ----- 0 Sulfonic acids which have proven particularly suitable 10 are, in particular, aromatic sulfonic acids whose aromatics are substituted by an alkyl group. Considered preferred sulfonic acids are radicals of the following formula 0 15 C H - o0----- 12 25\ Carboxylate groups which have proven particularly suitable are, in particular, carboxylates of fatty acids. Considered preferred carboxylates are stearates and isostearates. 20 In all of the above formulae the dashed bond in this case shows the connection to the titanium atom. Organotitanium compounds are available commercially, as 25 for example from the company Kenrich Petrochemicals or DuPont. Examples of suitable organotitanium compounds are, for example, Ken-React® KR TTS, KR 7, KR 9S, KR 12, KR 26S, KR 33DS, KR 38S, KR 39DS, KR44, KR 134S, KR 138S, KR 158FS, KR212, KR 238S, KR 262ES, KR 138D, 30 KR 158D, KR238T, KR 238M, KR238A, KR238J, KR262A, LICA 38J, KR 55, LICA1, LICA 09, LICA 12, LICA 38, LICA 44, ) 2005/093002 PCT/EP2005/051355 9/43 LICA 97, LICA 99, KR OPPR, KROPP2 from Kenrich Petrochemicals, or Tyzor® ET, TPT, NPT, BTM AA, AA-75, AA-95, AA-105, TE, ETAM from DuPont. Those preferred are Ken-React® KR 7, KR 9S, KR 12, KR 26S, KR 38S, 5 KR44, LICA 09, LICA 44 and Tyzor® ET, TPT, NPT, BTM, AA, AA-75, AA-95, AA-105, TE, ETAM from DuPont. The at least one hydrolyzable adhesion promoter substance A can additionally be an organozirconium 10 compound. Suitability is possessed in principle by all those organozirconium compounds known to the skilled worker that are used as adhesion promoters. Particularly suitable organozirconium compounds are those which carry at least one functional group which 15 is selected from the group comprising alkoxy group, sulfonate group, carboxylate group, and phosphate, or carries mixtures thereof, and which is attached via an oxygen-zirconium bond directly to a zirconium atom. 20 Alkoxy groups which have proven particularly suitable are, in particular, isopropoxy substituents and so called neoalkoxy substituents, particularly those of the following formula 0 0 --- 0 25 Sulfonic acids which have proven particularly suitable are, in particular, aromatic sulfonic acids whose aromatics are substituted by an alkyl group. Considered preferred sulfonic acids are radicals of the following 30 formula O 0 C H -0s-o0----- 12 25\ 0 2005/093002 PCT/EP2005/051355 10/43 Carboxylate groups which have proven particularly suitable are, in particular, carboxylates of fatty acids. Considered preferred carboxylates are stearates 5 and isostearates. In all of the above formulae the dashed bond in this case shows the connection to the zirconium atom. 10 Organozirconium compounds are available commercially, as for example from the company Kenrich Petrochemicals. Examples of suitable organozirconium compounds are, for example, Ken-React ® NZ 38J, NZ TPPJ, KZ OPPR, KZ TPP, NZ 01, NZ 09, NZ 12, NZ38, NZ 44, NZ 97. 15 Additionally it is possible for the first component K1 to comprise mixtures of at least one organosilicon compound with at least one organotitanium compound and/or with at least one organozirconium compound. 20 Likewise possible are mixtures of at least one organotitanium compound with at least one organozirconium compound. Preferred mixtures are those of at least one organosilicon compound with at least one organotitanium compound. 25 Particularly preferred mixtures are those of two or more organosilicon compounds or mixtures of one organosilicon compound with an organotitanium compound or organozirconium compound, respectively. 30 Mixtures of organosilicon compounds which have proven particularly appropriate are mixtures of adhesion promoter substances A of the formulae (I) where at least one of them carries substituents H as 35 substituents X and at least one of these substances carries a functional group which is selected from the group comprising oxirane, (meth)acryloyloxy, amine, SH, D 2005/093002 PCT/EP2005/051355 11/43 and vinyl as substituents X. These mixtures preferably comprise mixtures of at least one alkyltrialkoxysilane with an aminoalkyltrialkoxysilane and/or mercaptoalkyl trialkoxysilane. 5 The second component, K2, comprises or consists of at least one compound B which reacts with the adhesion promoter substance A or which triggers or catalyzes condensation of the adhesion promoter substance A. 10 The compound B which reacts with the adhesion promoter substance A or which triggers or catalyzes condensation of the adhesion promoter substance A is preferably an organotin compound or an acid. 15 In one preferred embodiment the compound B is an organotin compound and preferably represents a dialkyltin diacetylacetonate or a dialkyltin dicarboxylate, and in particular is dibutyltin 20 dilaurate or dibutyltin diacetate. Preferably compound B is dibutyltin dilaurate. In a further preferred embodiment the compound B is an acid. The acid may be an organic acid or an inorganic 25 acid. The acid typically has a pKal of less than 6. Particularly suitable inorganic acids are acids containing phosphorus, acids containing sulfur. Those which have proven particularly suitable are sulfonic 30 acid or phosphoric acid, especially sulfuric acid. Particularly suitable organic acids include formic, acetic, amino acid. Acetic acid has proven particularly suitable. 35 Further constituents in the first K1 and/or second K2 component are possible. Particular mention may be made 2005/093002 PCT/EP2005/051355 12/43 for this purpose of typical constituents such as solvents, binders, fillers, mixing assistants, and additives. Preferred solvents are volatile solvents such as water, alcohols, especially ethanol, 5 isopropanol, butanol, aldehydes or ketones, especially acetone, methyl ethyl ketone, hydrocarbons, especially hexane, heptane, cyclohexane, xylene, toluene, white spirit, and mixtures thereof, especially ethanol, methanol, isopropanol or hexane. 10 Suitable binders are particular film-forming binders, such as prepolymers and adducts of polyisocyanates or epoxy resins. Preference is given to polyurethane prepolymers which contain isocyanate groups and are 15 prepared from polyols and polyisocyanates. Preferred fillers are carbon blacks, pyrogenic silicas, chalks, whose surface has been modified if required. 20 Mixing assistants are preferably beads, especially metal beads or glass beads. Additives particularly include flow control agents, defoamers, surfactants, biocides, antisettling agents, 25 stabilizers, inhibitors, pigments, dyes, corrosion inhibitors, and odorants. When selecting the additional possible constituents for the first K1 and/or second K2 component, however, it 30 must be borne in mind that these additional constituents do not lead to storage stability problems or do not react with the compounds present in the respective components, particularly A, and/or B. 35 At room temperature the first K1 and second K2 components have a consistency which is between liquid and pulverulent, it being necessary for at least one of ) 2005/093002 PCT/EP2005/051355 13/43 the components to have a certain liquid fraction. With particular preference the first K1 and the second K2 components are liquid, because liquid components, and especially highly mobile liquid components, can be 5 mixed more effectively than highly pasty components. With preference the first K1 and second K2 components are a solution, a suspension or a dispersion. In the case of a suspension or a dispersion, the stability is an important feature. The stability can be controlled 10 by the skilled worker by means, for example, of varying solvent, concentrations, production process parameters, or by using suitable additives, especially surfactants, emulsifiers, co-emulsifiers or stabilizers. 15 Particularly suitable first K1 and second K2 components have a storage stability of at least 6 months, in particular at least 9 months, without instances of precipitation or separation. Although the absence of instances of precipitation or separation is preferred, 20 slight precipitation or separation is nevertheless not detrimental if it can be reversed by shaking, in particular by shaking for less than 10 minutes. In one preferred embodiment of a two-component adhesion 25 promoter composition the first component comprises at least one organosilicon compound A, at least one polyurethane prepolymer having at least two isocyanate groups, and, if desired, carbon black and, if desired, a volatile solvent. 30 In another preferred embodiment of a two-component adhesion promoter composition the first component comprises at least one organosilicon compound A and/or at least one organotitanium compound and/or at least 35 one organozirconium compound and the second component comprises water and at least one acid. The pH of the mixed two-component adhesion promoter composition is 0 2005/093002 PCT/EP2005/051355 14/43 preferably between 2 and 8, in particular between 3 and 5. The compartments in which the two components K1 and K2 5 are located are separated from one another by at least one dividing wall. The possible and preferred embodiments of the compartments and of the dividing walls are described schematically below. 10 Figure 1 shows an embodiment P1 of a package 6 and, respectively, of a pack 5 that is used. In this embodiment the dividing wall 3 is manufactured from a fragile material. Figure la shows a version in which the first compartment 1 is not completely surrounded by 15 the second compartment 2, while Figure lb describes a version in which the first compartment 1 is completely surrounded by the second compartment 2. The dividing wall 3 between the two compartments ruptures on application of pressure, as a result of which the two 20 components K1 and K2 can come into contact, mix and/or react with one another. The pressure is typically produced from outside by the action of force on the outer wall 4, 4' of the compartments. This action of force is preferably an impact or flexing of the pack. 25 The material of the dividing wall 3 is typically manufactured from glass, aluminum, an aluminum alloy, a thin plastic or a composite material. The dividing wall 3 must be manufactured in a thickness such that it does not rupture simply as a result of unintentional action 30 of force, such as is commonly experienced in the course of transport, for example. The outer wall 4, 4' must be designed such that it does not rupture or tear when the pressure is applied that leads to the rupture of the dividing wall 3. The outer wall 4, 4' is manufactured 35 either of a metal or of an elastic plastic.

0 2005/093002 PCT/EP2005/051355 15/43 Figure 2 shows an embodiment P2 of a package 6 and, respectively, a pack 5 that is used, with bursting means, in particular cutting means 7. In this embodiment the pressure is applied to the dividing wall 5 3 by a cutting means 7. The cutting means 7 either is mobile and is pressed onto the stationary dividing wall 3, or else the cutting means 7 is fixed and the dividing wall 3 is pressed onto the cutting means 7. As a result of the pressure, the dividing wall 3 tears, so 10 that the two components K1 and K2 can come into contact and/or react with one another. In the storage condition of the package, the cutting means 7 is preferably at a certain distance from the dividing wall 3. Cutting means 7 and dividing wall 3 can be displaced onto one 15 another. This is accomplished either by application of presssure and hence by deformation of the outer wall 4, 4', or by means of a thread. The outer wall 4, 4' must be designed such that it does not itself rupture or tear when the pressure is applied that leads to the 20 penetration of the dividing wall 3 by cutting means 7. The outer wall 4, 4' is manufactured either from a metal foil or an elastic plastic. The nature of the cutting means may in principle be very different in design. For instance, Fig. 2a) shows a sharp point as 25 cutting means 7, while Fig. 2b shows a sphere as the bursting aid, in particular cutting means, 7. Preferably the cutting means 8 has either points or edges. Such points or edges make it easier to sever the dividing wall 3. Accordingly an embodiment as per 30 Figure 2a is preferred. Figure 3 shows an embodiment P3 of a package 6 and, respectively, of a pack 5 that is used. In this embodiment the dividing wall is realized by a seal 3'. 35 In the unopened state of the pack 5, the seal 3' separates the two compartments 1, 2 from one another. This is achieved by virtue of the fact that, in the D 2005/093002 PCT/EP2005/051355 16/43 unopened state, the seal 3' is squeezed by at least two wall sections 8, 8' of the outer wall 4, 4' . At least one of the wall sections 8, 8' is designed such that it can be moved by external influence. Such mobility is 5 achieved in particular by way of a thread 9, 9'. When opening is desired, the wall section 8, 8' is moved away from the squeezed seal 3', as a result of which the latter loses its sealing function and opens a passage, so that the two components K1 and K2 can come 10 into contact and/or react with one another. In one particular version of this embodiment the seal 3' becomes so loose, when the pack is opened or shaken, that it falls into one compartment. 15 The seal 3' is manufactured from an elastic material, of the kind typically used for the sealing of liquids. Figure 3a) shows a configuration with one thread 9, while Figure 3b) has two threads 9, 9'. Figure 3b) is 20 advantageous over 3a) since in a first step the first compartment can be filled with one component, K1 or K2, after which the seal 3' can be screwed on via a thread 9 and hence sealed tightly via the wall section 8, and, at a later point in time, this part, which has the 25 function of a lid, can be screwed onto the second part of the package, which the other component, K2 or Kl, with the second thread 9', and hence the second compartment as well can be sealed off tightly via the wall section 8'. 30 Figure 4 shows an embodiment P4 of a package 6 and, respectively, of a pack 5 that is used. In this embodiment the dividing wall 3 is of extractable design. In this case there is, between the 35 compartments, a thin dividing wall 3 which is extracted by external intervention, so that the two components K1 and K2 can come into contact and/or react with one ) 2005/093002 PCT/EP2005/051355 17/43 another. The connecting points in the region where the dividing wall connects with the inner wall of the compartments 1, 2 have predetermined breakage points for this purpose. Particularly suitable for extraction 5 are those embodiments in which the dividing wall 3 is connected to a tearing tab 16. Figure 4a) shows a version in which only the dividing wall 3 is connected to the inner walls of the compartments 1, 2. The connecting points in the region where the dividing wall 10 is connected to the inner wall of the compartments 1, 2 have a predetermined breakage point for this purpose, in the same way as the region where the tearing tab 16 is connected to the outer wall. In Figure 4b), when the dividing wall is extracted, at the same time the cover 15 11, which is connected to the tearing tab 16 and the dividing wall, is also separated from the package, so that an aperture 10 is formed through which the two components, which have come into contact with one another, can be removed from the pack. 20 Figure 5 shows a preferred embodiment of embodiment P1. In this embodiment the first compartment 1 with one component K1 is composed of a fragile glass or plastic ampule 3. The second compartment 2 with the other 25 component K2 is likewise a fragile glass or plastic ampule. The two ampules are disposed preferably in a tube-in-tube arrangement or - as depicted - in an ampule-in-ampule arrangement. This ampule arrangement is let into a container whose outer walls 4 are 30 manufactured from flexible plastic or cardboard. Furthermore, this plastic container has an aperture 10 which is covered by a porous cover 20, in particular by a felt strip or a sponge. When the package is activated, the glass ampules are broken open by flexing 35 of the outer walls 4 or an impact on the outer walls of the plastic or cardboard container, so that the components K1 and K2 can mix and/or react. The reaction D 2005/093002 PCT/EP2005/051355 18/43 mixture soaks the felt or sponge 20 and can be applied by means of contact of the latter with a surface. The felt or sponge additionally helps to prevent any splinters which might originate from the broken ampule 5 from emerging from the package 5, 6. This embodiment P1 therefore constitutes a single-use package for the application of a two-component adhesion promoter composition. It is highly suitable especially for small quantities. In particular this package is suitable for 10 the pretreatment of a vehicle window, in particular an automobile window. Figure 6 shows a further preferred embodiment of embodiment Pl. In this case a fragile glass or plastic 15 ampule 3 containing a component Ki is held in a bottle with a fixing agent 14 which contains the other component K2. Figure 6a) shows an embodiment with a horizontal ampule 3. The ampule in this case can be broken, where appropriate, by a rigid means, a metal 20 spatula for example, so that the components K1 and K2 can mix and/or react, or the ampule can be caused to burst by compression or impact on the bottle. The rigid means can be introduced through an opening in the bottle. After the means has been removed, the bottle 25 can, if appropriate, be sealed and shaken. Figure 6b) shows an embodiment with a vertical ampule 3. The ampule is designed such that it is longer than the height of the bottle and in the lid 12 protrudes into a fixing agent 14. The lid 12 carries a thread 9 and is 30 preferably provided with a safety tab 13, which prevents the lid 12 being turned by mistake. When activation is desired, the safety tab 13 is removed and the lid 12 is turned, causing the base of the lid 12 to move toward the ampule 3 and cause it, under pressure, 35 to break or tear, so that the components KI and K2 can mix and/or react. The lid seal ensures, furthermore, that the bottle is impervious and can be shaken. In ) 2005/093002 PCT/EP2005/051355 19/43 both embodiments, of Figures 6a and 6b, it is preferred that a felt or a fine net 20 is mounted for the application of the reaction mixture after the components K1 and K2 have been mixed, in order to 5 hinder any splinters which may originate from the broken ampule from emerging from the package. It is preferred to use a felt or a sponge, since a felt or sponge is soaked with the two-component adhesion promoter composition and is therefore extremely 10 suitable for its application. The felt or sponge is typically connected to a shaped part which has a thread and can be screwed onto the thread 9 of the bottle. Figure 7 shows a further preferred embodiment of 15 embodiment Pl. In this case, within a compartment 1, there is at least one metal ball as mixing aid 17. As a result of shaking, the dividing wall 3 between the two compartments is broken or torn by the ball 17, so that the components K1 and K2 can mix and/or react. If 20 required, the ball 17 can be provided with points or edges in order to make it easier to tear the dividing wall 3. The thickness and nature of the dividing wall 3 and also the amount and surface design of the balls 17 used should be chosen such that the destruction of the 25 dividing wall 3 is possible by simple shaking of the package 6, but not unwantedly, as in the case simply of small vibrations, such as occur during transport. As well as the version shown in Figure 7a) with dividing wall 3 which stretches between the outer walls 4, 4' 30 between the compartments, Figure 7b) depicts a modification of the ampule 3 shown in Figure 6 and containing one component. Figure 8 shows a further preferred embodiment of 35 embodiment P1. In this embodiment, one component K1 is packaged in a compartment 1 which forms a bladder 21. In Figure 8a the design of the bladder 21 is such that ) 2005/093002 PCT/EP2005/051355 20/43 at its base it is connected to the dividing wall 3 and at that point has a predetermined breakage point. By removal of the safety tab 13, the lid 12 can be rotated down via the thread 9, as a result of which the base of 5 the lid 12 moves toward the bladder. By this means the bladder 21 is squeezed until sufficient pressure is produced that the predetermined breakage point ruptures, so that the components K1 and K2 can mix and/or react. This embodiment is suitable in particular 10 for highly mobile liquid components K1 and K2. An alternative possibility, after the removal of the safety tab 13, is for the lid 12 to be unscrewed and the bladder 1, 2 to be squeezed manually, by hand, with the component it contains extruded. In Figure 8b) the 15 bladder 21 has a clamp closure 18. As a result of the squeezing of the wall of the passage between compartments 1 and 2, this wall forms the dividing wall 3, which separates the two compartments 1 and 2 from one another in the unopened state. In the case of 20 opening, the lid 12 is first unscrewed using thread 9. Subsequently the clamp closure 18 is removed, thereby opening the passage between compartments 1 and 2, so that components K1 and K2 can mix and/or react. This may be further assisted by the bladder 21 being pressed 25 out. In both embodiments the bladder is preferably designed in such a way that it is connected to the wall section 8 of the other compartment 2 in such a way that it can be easily removed in order to allow a felt or a sponge to be subsequently fastened to the aperture 10, 30 in particular by means of the thread 9, for the purpose of application of the adhesion promoter composition. Figure 9 shows a further preferred embodiment of the embodiment P1. In this case it takes the form of a 35 bottle 5 or a double-hose pouch 5, which has two compartments 1, 2, which are separated from one another by a dividing wall 3 disposed in the lengthwise 0 2005/093002 PCT/EP2005/051355 21/43 direction of the bottle or pouch. The outer walls 4, 4' of the bottle 5 or pouch 5 are manufactured from a highly elastic material, while the dividing wall 3 is manufactured either from a rigid material or in a very 5 thin layer thickness. As a result of axial twisting of the bottle 5 or of the double pouch 5, the dividing wall is very severely stretched or loaded, so that the dividing wall 3 tears - depicted in Figure 9' - so that the components K1 and K2 can mix and/or react. At its 10 end the pouch or bottle preferably has a thread 9 with a tightly closing lid 12. After mixing or shaking has been carried out, this lid 12 can be opened and the reaction mixture can be applied to a surface. In addition, with preference, a felt can be screwed onto 15 this thread 9. Figure 10 shows a preferred embodiment of embodiment P2. In this case one compartment 1 forms a part of the lid 12 of a bottle 5. Figures 10a)-f) show different 20 preferred arrangements in this context. In Figure 10a) the cutting means 7 are connected to the wall section 8 or lie on it, in the form for example of a ring, and are directed toward the dividing wall 3 of 25 the compartment 1, 2. As a result of removal of the safety tab 13, it is possible for the lid 12 and hence the compartment 1, 2 to be moved by way of the thread 9', by rotation, toward the cutting means 7. When the cutting means 7 make contact with the dividing wall 3, 30 which is manufactured from a severable material, the wall 3 is cut through, so that the components K1 and K2 can mix and/or react. If the cutting means 7 are arranged eccentrically in relation to the axis of rotation of the lid 12 - as shown in Fig. 10a)- then 35 further rotation of the lid produces an incision in the form of a curve in the dividing wall 3, so that the dividing wall can be folded away or even cut out, which ) 2005/093002 PCT/EP2005/051355 22/43 is very advantageous for the mixing of components K1 and K2. In Figure 10b) a plurality of cutting means 7 are 5 arranged in distribution over the aperture of the bottle. Between the cutting means there are passages for the component K1i, K2 in the compartment 1, 2. Typically this type is achieved by means of a perforated plate or net with points which is directed 10 against the dividing wall and which lies on or is connected to the wall section 8. By removal of the safety tab 13 it is possible for the lid 12 and hence the chamber 1, 2 to be moved by way of the thread 9', by means of rotation, towards the cutting means 7. When 15 the cutting means 7 make contact with the dividing wall 3, which is manufactured from a severable material, the wall 3 is cut through, so that the components K1 and K2 can mix and/or react. The presence of a plurality of cutting means 7 arranged in this way has the advantage 20 that at the same time the dividing wall 3 is perforated at a number of locations simultaneously and hence the dividing wall is efficiently destroyed. In Figure 10c) the component K1 is packed in different 25 compartments, 1, 1', 1", which form a part of the lid 12. These compartments 1, 1', 1" may be filled balls or pouches manufactured from a severable or rupturable material. Furthermore, it is possible in principle for these compartments 1, 1', 1" to be able to contain 30 different components K1, Kl', Kl". Thus, for example, it would be possible to realize three-component or multicomponent adhesion promoter compositions in such a way, which would not be suitable for storage with one another or would lead to relatively poor adhesion 35 promoter properties. A plurality of cutting means 7 are arranged in distribution over the aperture of the bottle. Between the cutting means there are passages ) 2005/093002 PCT/EP2005/051355 23/43 for component K1 in compartment 1. Typically this type is achieved by means of a perforated plate or net which has points and is directed against the dividing wall, and which lies on or is connected to the wall section 5 8. By removal of the safety tab 13 it is possible for the lid 12 and hence the compartment 1 to be moved by way of the thread 9', by means of rotation, towards the cutting means 7. When the cutting means 7 make contact with the dividing wall 3 the wall 3 is cut through or 10 ruptured, so that the components K1 and K2 can mix and/or react. In Figure 10d) the component K1 is stored in a compartment 1 which is manufactured from a severable 15 film and which forms part of the lid 12. The other compartment 2 is sealed with a dividing wall 3'. In both compartments, cutting means 7 are mounted close to the two dividing walls 3, 3'. By removal of the safety tab 13 it is possible for the lid 12 to be rotated by 20 way of the thread 9', as a result of which the cutting means 7 move toward one another and in this case cut through the dividing walls 3, 3', so that the components K1 and K2 can mix and/or react. This embodiment possesses the advantage that both 25 compartments, 1 and 2, can be filled with the respective component K1 and K2, and can be stored imperviously separately from one another. In Figure 10e) an embodiment is shown in which one 30 compartment 1 forms part of the lid 12, which is typically connected to the bottle with a thread 9, and where the lid has a protective cover 19 which can be folded open. Situated beneath this protective cover is one compartment 1. This compartment is manufactured 35 from a deformable and severable material, a polymeric film, a metal foil or a composite sheet for example. Mounted on the inside of the compartment, on the side D 2005/093002 PCT/EP2005/051355 24/43 facing the protective cover, is a cutting means 7. This part of the compartment typically has a convexity toward the outside. When mixing is desired, the protective cover 19 is folded open - depicted in Fig. 5 10e') - and subsequently pressure is applied to the convexity, as a result of which the cutting means 7 is pressed onto the dividing walls 3, 3', so that these walls tear and the components K1 and K2 can mix and/or react. 10 The embodiment described in Figure 10f) is very similar to that of Figure 10e) with the cover. In this case one compartment 1 is part of the lid 12. The compartment is manufactured from a severable material. The other 15 compartment, 2, is closed off by a dividing wall 3, which is likewise manufactured from a severable material. In the unopened state, the two walls 3, 3' which delimit the two compartments 1, 2 are arranged very close, preferably in contact with one another. By 20 removal of the safety tab 13 and rotation of the lid 12 it is possible for said lid, together with the compartment 1, 2 and also the cutting means 7, to be moved toward the dividing wall 3 by way of the thread 9'. When the cutting means 7 come into contact with the 25 dividing walls 3, the latter are cut through, so that the components K1 and K2 can mix and/or react. This embodiment as well possesses the advantage that both compartments, 1 and 2, can be filled with the respective component K1 or K2 and can be stored 30 imperviously separately from one another. Figure 11 shows a preferred embodiment of embodiment P4. In this case the two compartments 1, 2 are separated from one another by an extractable dividing 35 wall. In Figure 11a), moreover, this dividing wall 3 is connected with the wall section 8 and 8', respectively, of the respective compartment 1, 2 and so forms a cover 0 2005/093002 PCT/EP2005/051355 25/43 11 to the aperture 10. On extraction, first of all, the cover 11 is opened by means of a tab 16. Thereafter the dividing wall 3 is extracted by means of the predetermined breakage points, which are located at the 5 points where the dividing wall is connected to the inner wall of the compartments 1, 2, so that components K1 and K2 can mix and/or react. The lid can then be screwed on again and shaking, for example, can take place. Furthermore, for the purpose of application, a 10 felt or sponge can be mounted on the aperture 10, in particular screwed on by means of the thread 9. In Figure llb) the extractable dividing wall 3 is designed in such a way that it has a tearing tab 16 at 15 the base of compartments 1, 2. This tearing tab 16 is connected, furthermore, to the cover 11 which seals the aperture 10 of the bottle. After the lid 12 has been removed, the cover 11 can be removed and then it is possible to pull on the tearing tab 16 or directly on 20 the tab 16, so that the dividing wall 3 detaches from the bottom, by peeling, from the inner walls of the compartments, at the predetermined breakage points, so that components KI and K2 can mix and/or react. The dividing wall can be produced, for example, by lightly 25 welding a film tape to the inner wall section of a bottle. The tearing tab 16 is typically the rest of this film tape. In all of the figures the first component K1 can be 30 present in the first compartment 1 and the second component K2 can be present in the second compartment 2, or else the first component K1 can be present in the second compartment 2 and the second component K2 can be present in the first compartment 1. 35 The size of the compartments is preferably such that at least one compartment 1, 2 has a greater volume than 0 2005/093002 PCT/EP2005/051355 26/43 the volume of the component KI, K2 present in it. With particular preference the volume not occupied by said component corresponds at least to the volume of the other component. 5 Moreover, the volume ratio K1/K2 of the first component K1 to the second component K2 is between 1000/1 and 1/1000, in particular between 200/1 to 10/1 or between 1/200 to 1/10. Preferably the volume ratio K1/K2 is 10 between 200/1 to 20/1 or between 1/200 to 1/20. At least the walls of the compartment in which the first component K1 is stored are preferably of one or more materials which impervious to diffusion of water 15 in liquid or gaseous state or at least so impermeable that the desired storage stability is not adversely affected. Particularly suitable for this purpose are aluminum or glass or composites. Thus, for example, component 1 can be stored in an aluminum pouch or in an 20 aluminum-coated plastic pouch. This kind of compartment has the advantage that the wall can be severed anywhere, and therefore that precise positioning of the pouch is not required. Pouches of this kind are suitable in particular for the embodiments according to 25 Figure 10. The package 6 is produced by filling of the compartments 1 and 2 with components K1 and K2, followed where appropriate by the assembly of the pack. 30 The package has good storage stability, typically of at least 6 months, in particular of at least 9 months. If the package 6 is to be used to apply an adhesion promoter, it can be activated specifically. For this purpose the dividing wall 3 must be removed or severed 35 so that the components Ki and K2 can make contact, mix and/or react. Mixing may be assisted by shaking. Subsequently the adhesion promoter composition prepared ) 2005/093002 PCT/EP2005/051355 27/43 in this way is removed from the package 6 and applied to a surface on which adhesive bonding or sealing is to take place. Depending on the nature of the chosen constituents in components K1 and K2, it may be 5 necessary to allow a short time, typically less than half an hour, to elapse between contacting of the two components and their application, in order to achieve an optimum adhesion promoter effect. Preferably, however, the adhesion promoter composition is applied 10 immediately. The surface may be composed of very different material, particular preference being given to glass, glass ceramics, metals, paints, and plastics. Where appropriate it may be necessary for the surface to be pretreated, prior to application of the adhesion 15 promoter, by further chemical, physical or physicochemical methods. For application it is preferred to mount a porous cover 20, in particular a felt or a sponge, on a package 6 with aperture 10. A porous cover 20 of this kind is typically affixed to a 20 shaped part which ensures, in the edge region, an assembly with the pack. This assembly is achieved preferably by way of a screw connection via a thread 9. The two-component adhesion promoter composition is applied in a layer thickness of less than 1 millimeter, 25 typically in a layer thickness of less than 100 micrometers. If the adhesion promoter composition comprises fillers and/or binders, a layer thickness between 1 and 100 micrometers, in particular between 1 and 20 micrometers, is preferred. If the adhesion 30 promoter composition comprises no fillers and no binder, a layer thickness is preferred which is between one molecular monolayer of the compound A and 50 micrometers, in particular between 2 nanometers and 10 micrometers, in particular between 10 nanometers and 1 35 micrometer.

) 2005/093002 PCT/EP2005/051355 28/43 Examples Preparation, Examples 1-5 1 2 3 4 5 K1 [Gew.%] [Gew.%] [Gew.%] [Gew.%] [Gew.%] 3-Mercaptopropyltrimethoxysilan 0.5 (Silquest A-189, Osi Crompton) 3-Aminopropyltrimethoxysilan 0.5 1.0 0.5 1.0 0.5 1.0 0.5 1.0 (Silquest A-1110, Osi Crompton) N-(2-Aminoethyl)-3-aminopropyl-trime thoxysilan 0.5 (Silquest A-1120, Osi Crompton) Bis(pentan-2,4-dioano-O,O')(bis- 1.0 1.0 1.0 1.0 isopropanolato)titan (Tyzor@ AA-75) Methyltrimethoxysilan 0.25 0.5 0.5 0.25 0.5 0.5 (Fluka) K2 Wasser deionisiert 97.25 92.7 92.7 91.7 91.7 Netzmittel 0.5 0.3 0.3 0.3 0.3 (Tergitol TMN-6, Dow)) EssigsAiure 1 6 6 6 6 Total 100 100 100 100 100 5 Table 1. Two-component adhesion promoter compositions Components K1 and K2 were prepared separately from one another by mixing with stirring, the mixing of the 10 three constituents of the first component K1 taking place under nitrogen. The components were mixed and after 30 minutes the mixture was applied to different substrates by 15 spreading using an impregnated paper cloth (Tela or D 2005/093002 PCT/EP2005/051355 29/43 Kleenex®). Subsequently the adhesive was applied after 10 minutes. Preparation, Example 6 5 Example 6 is based on Sika® Aktivator (available commercially from Sika Schweiz AG). Sika® Aktivator is an adhesion promoter composition comprising an organosilicon compound A and an organotitanium compound 10 A and also a volatile solvent. The Sika Aktivator is stored in one compartment, and dibutyltin dilaurate B in a second compartment. The amounts are such that 3% by weight of dibutyltin dilaurate is used, based on the weight of the Sika® Aktivator. 15 The components were mixed. Shortly after mixing, a yellow-orange coloration became apparent. After 10 minutes the mixture was applied to the various substrates by spreading with an impregnated paper cloth 20 (Tela or Kleenex®). Subsequently the adhesive was applied after 10 minutes. Substrate preparation and primer application Substrate Source Float glass Rocholl, Sch6nbrunn, Germany Glass with bismuth-based Rocholl, Sch6nbrunn, Germany ceramic coating Cerdec 14259 AlMgSil Rocholl, Sch6nbrunn, Germany 25 The AlMgSil was roughened using abrasive paper. The substrates were cleaned with an isopropanol/water mixture (1/1 w/w). After a waiting time of 5 minutes, 30 the adhesion promoter composition was applied. In the 0 2005/093002 PCT/EP2005/051355 30/43 case of glass, the tin side was not used for the adhesions. Adhesive application and test methods 5 Following the application of the adhesion promoter composition, a bead of an adhesive was applied to it. The adhesives in question were the following moisture curing polyurethane or silane-modified polyurethane 10 adhesives, available commercially from Sika Schweiz AG: Sikaflex®-250 DM-1 ('DM-1') SikaTack®-Ultrafast ('STUF') SikaTack®-Plus Booster ('STPB') 15 The adhesive was tested after a cure time of 7 days of climate chamber storage ('CC') (23 0 C, 50% relative humidity) and after subsequent water storage for 7 days at 25 0 C ('WB') and also after hot wet storage ('CP') for 7 days at 70 0 C and 100% relative humidity. 20 The adhesion of the adhesive was tested by means of the 'bead test'. In this test an incision is made at the end just above the adhesion face. The incised end of the bead is held with round pliers and pulled from the 25 substrate. This is done by carefully rolling up the bead on the tip of the pliers, and placing a cut vertical to the bead pulling direction down to the bare substrate. The rate of bead removal is selected so that a cut has to be made approximately every 3 seconds. The 30 test length must amount to at least 8 cm. An assessment is made of the adhesive which remains on the substrate after the bead has been pulled off (cohesive fracture). The adhesion properties are evaluated by estimation of the cohesive fraction of the adhesion face: 35 1 = > 95% cohesive fracture 2 = 75-95% cohesive fracture 0 2005/093002 PCT/EP2005/051355 31/43 3 = 25-75% cohesive fracture 4 = < 25% cohesive fracture 5 = adhesive fracture 5 The addition "F" indicates that the adhesive exhibits film adhesion on the primer, so that the fracture occurs between primer and adhesive. Test results with cohesive fractures of less than 75% are considered inadequate. 10 High-speed strength: the early strength was determined by means of a high-speed tensile test after 1 hour of curing under different curing conditions. Measuring speed 1 m/s. 15 FOG: the early strength was measured by means of a Zwick apparatus. Measuring speed 200 mm/min after curing for 2 hours at 23 0 C and 50% relative humidity. 20 Results STUF DM-1 A1MgSil Glass Bi- A1MgSil Glass Bi ceramic ceramic Ref. 1 5/5/1 5/5/2 5/5/1 5/5/5 5/5/5 5/5/5 Ref. 2 3/5F/1 5F/5F/1 5/5/1 5/5/5 5/5/5 5/5/5 Ref. 3 5F/4F/1 3/2/2 5/5/1 5/5/5 5/5/5 5/5/5 1 1/1/1 1/1/1 1/1/1 1/2/3 1/1/1 1/1/1 2 1/4/2 2/4/3 n.m. t n.m. t 2/4/3 n.m. t 3 1/4/3 1/2/1 n.m. $ n.m. $ 1/2/1 n.m. t 4 2/4/3 1/2/1 n.m. $ n.m. t 1/2/1 n.m. t 5 1/3/3 1/4/2 n.m. t n.m. t 1/4/2 n.m. t Table 2: Adhesion results for bead test with evaluation after different forms of storage (CC/WB/CP). t n.m. = not measured 25 Ref. 1 is the comparative example without application of adhesion promoter. In the case of Ref. 2 only water D 2005/093002 PCT/EP2005/051355 32/43 was applied and in Ref. 3 an application of water/surfactant (concentration analogous to example) was carried out. Application took place in the same way as for the adhesion promoter compositions, that is, by 5 means of impregnated paper cloth (Tela or Kleenex®). In the case of Example 6 the development of early strength was determined in comparison to Sika® Aktivator. For that purpose, aluminum panels were 10 cleaned with isopropanol/water mixture as described, after which the primer Sika® Primer-206 G+P was applied with a brush, left to evaporate for 10 minutes at 250C, and subsequently Example 6, or, for comparison, Sika® Aktivator, was applied by means of impregnated paper 15 cloth (Tela or Kleenex®) and, finally, bonded with SikaTack®-Ultrafast or SikaTack®-Plus Booster. Sika Aktivator® 6 (comparison) Strength [N/mm 2 ] -10oC/90% relative 0.72 0.91 + 26% humidity 5oC/90% relative 1.14 1.4 + 23% humidity 23oC/50% relative 1.16 1.3 + 12% humidity Energy [J] -100C/90% relative 1.7 2.1 + 24% humidity 5oC/90% relative 4 5.2 + 30% humidity 23oC/50% relative 6 13.3 + 122% humidity Table 3. High-speed test (1 m/s) with STBP. Sika Aktivator® 6 (comparison) O 2005/093002 PCT/EP2005/051355 33/43 Strength [N/cm] 27.7 38.7 + 40% Energy [J] 3.05 5.1 + 67% Table 4. FOG measurements with STUF. The results show that with the two-component adhesion promoter compositions of the invention it is possible 5 to achieve excellent adhesion on different substrates and with different adhesives, which is also manifested in a rapid development of adhesion.

O 2005/093002 PCT/EP2005/051355 34/43 List of reference symbols K1 first component K2 second component 1 first compartment 5 2 second compartment 3 dividing wall 3' seal 4 outer wall 4' outer wall 10 5 pack 6 package 7 cutting means 8 wall section 8' wall section 15 9 thread 9' thread 10 aperture 11 cover 12 lid 20 13 safety tab 14 fixing agent 15 mixing aid 16 tearing tab 17 mixing aid 25 18 clamp closure 19 protective cover 20 porous cover 21 bladder

Claims (32)

1. A two-component adhesion promoter composition for surface pretreatment, comprising two components, 5 the first component, K1, comprising at least one hydrolyzable adhesion promoter substance A which is selected from the group comprising organosilicon compounds, organotitanium compounds, organozirconium compounds, and mixtures thereof, 10 and the second component, K2, comprising at least one compound B which reacts with the adhesion promoter substance A or triggers or catalyzes condensation of the adhesion promoter substance A, and 15 the first and the second components in the unopened state being present in two compartments (1, 2) separated from one another by at least one dividing wall (3). 20

2. The two-component adhesion promoter composition of claim 1, characterized in that the hydrolyzable adhesion promoter substance A is an organosilicon compound which carries at least one, in particular at least two, alkoxy group or groups which is or 25 are attached via an oxygen-silicon bond directly to a silicon atom.

3. The two-component adhesion promoter composition of claim 2, characterized in that the organosilicon 30 compound carries at least one substituent which is attached via a silicon-carbon bond to the silicon atom and which optionally has a functional group selected from the group comprising oxirane, hydroxyl, (meth)acryloyloxy, amino, mercapto, and 35 vinyl group. ) 2005/093002 PCT/EP2005/051355 36/43

4. The two-component adhesion promoter composition of claim 3, characterized in that the hydrolyzable adhesion promoter substance A has the formula (I) R 3 1 a 2 X-RLSi-(OR 2 ) 3 -a (I) 5 where R 1 is a linear or branched, optionally cyclic, alkylene group having 1 to 20 C atoms, with or without aromatic components, and optionally with 10 one or more heteroatoms, especially nitrogen atoms; R is an alkyl group having 1 to 5 C atoms, especially methyl or ethyl; R 3 is an alkyl group having 1 to 8 C atoms, 15 especially methyl; X is an H or a functional group which is selected from the group comprising oxirane, OH, (meth)acryloyloxy, amine, SH, and vinyl; and 20 a is 0, 1 or 2, particularly 0.

5. The two-component adhesion promoter composition of claim 3, characterized in that the substituent R1 is a methylene, propylene, methylpropylene, 25 butylene, or dimethylbutylene group, in particular a propylene group.

6. The two-component adhesion promoter composition of claim 4, characterized in that the hydrolyzable 30 adhesion promoter substance A is one selected from the group comprising methyltriacetoxysilane, ethyltriacetoxysilane, 3-methacryloyloxypropyl trialkoxysilanes, 3-aminopropyltrialkoxysilanes, bis[3-(trialkoxysilyl)propyl]amines, tris[3-(tri 35 alkoxysilyl)propyl]amines, 3-aminopropyltrialkoxy- 0 2005/093002 PCT/EP2005/051355 37/43 silanes, N-(2-aminoethyl)-3-aminopropyltrialkoxy silanes, N-(2-aminoethyl)-N-(2-aminoethyl)-3 aminopropyltrialkoxysilanes, 3-glycidyloxypropyl trialkoxysilanes, 3-mercaptopropyltrialkoxy 5 silanes, vinyltrialkoxysilanes, methyltrialkoxy silanes, octyltrialkoxysilanes, dodecyltrialkoxy silanes, and hexadecyltrialkoxysilanes, particular suitability being possessed by the methoxysilanes and ethoxysilanes of the above mentioned 10 compounds.

7. The two-component adhesion promoter composition of claim 1, characterized in that the hydrolyzable adhesion promoter substance A is an organotitanium 15 compound which carries at least one functional group which is selected from the group comprising alkoxy group, sulfonate group, phosphate group, carboxylate group or mixtures thereof and which is attached via an oxygen-titanium bond directly to a 20 titanium atom.

8. The two-component adhesion promoter composition of claim 7, characterized in that the alkoxy group is a methoxy, butyl or isopropyl group, in particular 25 an isopropyl group.

9. The two-component adhesion promoter composition of any one of the preceding claims, characterized in that the first component K1 comprises at least two 30 hydrolyzable adhesion promoter substances A.

10. The two-component adhesion promoter composition of claim 9, characterized in that the first component K1 comprises at least one hydrolyzable adhesion 35 promoter substance A which is an organosilicon compound and at least one hydrolyzable adhesion 0 2005/093002 PCT/EP2005/051355 38/43 promoter substance A which is an organotitanium compound.

11. The two-component adhesion promoter composition of 5 any one of the preceding claims, characterized in that the compound B in the second component K2 is an organotin compound or an acid.

12. The two-component adhesion promoter composition of 10 claim 11, characterized in that the compound B is an organotin compound, especially dialkyltin diacetylacetonate or a dialkyltin dicarboxylate, especially dibutyltin dilaurate or dibutyltin diacetate, preferably dibutyltin dilaurate. 15

13. The two-component adhesion promoter composition of claim 11, characterized in that the compound B is an acid, in particular an inorganic acid, preferably containing phosphorus, containing 20 sulfur.

14. The two-component adhesion promoter composition of claim 11, characterized in that the compound B is an acid, in particular an organic acid, preferably 25 formic, acetic or amino acid, most preferably acetic acid.

15. The two-component adhesion promoter composition of any one of the preceding claims, characterized in 30 that the second component comprises water.

16. The two-component adhesion promoter composition of any one of the preceding claims, characterized in that the first K1 and/or the second K2 component 35 further comprises a volatile solvent, especially ethanol, methanol, isopropanol or hexane. 0 2005/093002 PCT/EP2005/051355 39/43

17. The two-component adhesion promoter composition of any one of the preceding claims, characterized in that the first K1 and/or the second K2 component is liquid. 5

18. The use of a pack (5) which has two compartments (1, 2) separated from one another by at least one dividing wall (3) for the storage of two components (K1, K2), characterized in that 10 the first component K1 is a first component K1 as described in any one of claims 1 to 10 and 16 to 17; and the second component K2 is a second component K2 as described in any one of claims 1 and 11 to 15 15 and 16 to 17.

19. The use of a pack of claim 18, characterized in that the at least one dividing wall (3) is a seal (3') which in the unopened state of the pack (5) 20 separates the two compartments (1, 2) from one another.

20. The use of a pack of claim 19, characterized in that the seal (3') in the closed state is squeezed 25 by at least two wall sections (8, 8'), at least one wall section (8, 8') being configured as to be movable by external influence, in particular by a thread (9), so that by virtue of the external influence the seal (3') becomes loose and the two 30 compartments (1, 2) are connected to one another.

21. The use of a pack of claim 18, characterized in that the dividing wall (3) in the region of the connection with the inner wall of the compartments 35 1, 2 has a predetermined breakage point and can be extracted from the pack 5. D 2005/093002 PCT/EP2005/051355 40/43

22. The use of a pack of claim 18, characterized in that the dividing wall (3) is manufactured from a material which ruptures or tears as a result of the application of pressure. 5

23. The use of a pack of claim 21 or 22, characterized in that at least one compartment (1, 2) has a greater volume than that of the component present therein, with particular preference such that the 10 volume not occupied by said component corresponds at least to the volume of the other component.

24. The use of a pack of claim 22 or 23, characterized in that the pressure is applied by a bursting aid, 15 in particular a cutting means (7), to the dividing wall (3).

25. The use of a pack of any one of claims 18 to 24, characterized in that the volume ratio K1/K2 of 20 the first component K1 to the second component K2 is between 1000/1 and 1/1000, in particular between 200/1 to 10/1 or between 1/200 to 1/10, preferably between 200/1 to 20/1 or between 1/200 to 1/20. 25

26. The use of a pack of any one of claims 18 to 25, characterized in that at least the walls of that compartment in which the first component K1 is stored are composed of one or more materials which 30 are impervious to diffusion of water in liquid or gaseous state, especially aluminum or glass or composites.

27. A package (6) consisting of 35 a pack (5) which has two compartments (1, 2) separated from one another by at least one dividing wall (3); D 2005/093002 PCT/EP2005/051355 41/43 and a two-component adhesion promoter composition of any one of claims 1 to 17. 5

28. The package (6) of claim 27, characterized in that the dividing wall (3) is manufactured from a material which ruptures or tears as a result of the application of pressure. 10

29. The package (6) of claim 27 or 28, characterized in that at least the walls of the compartment in which the first component is stored are composed of one or more materials which are impervious to diffusion of water in liquid or gaseous state or 15 at least so impermeable that the desired storage stability is not adversely affected, especially aluminum or glass or composite.

30. The package (6) of any one of claims 27 to 29, 20 characterized in that the volume ratio K1/K2 of the first component K1 to the second component K2 is between 1000/1 and 1/1000, in particular between 200/1 to 10/1 or between 1/200 to 1/10, preferably between 200/1 to 20/1 or between 1/200 25 to 1/20.

31. A method of applying a two-component adhesion promoter composition for surface pretreatment, of any one of claims 1 to 17, characterized in that 30 by application of pressure to the dividing wall (3) said wall ruptures and subsequently the two components (K1i, K2) come into contact with one another, and the composition is applied through an aperture (10), which if appropriate is accessible 35 by removal of a cover (11), to a substrate surface. O 2005/093002 PCT/EP2005/051355 ,42/43

32. The method of claim 31, characterized in that between the contacting of the two components (K1, K2) and the application a step of mixing is carried out, brought about in particular by 5 shaking of the package (6).